Testa Grigia, Mountain summit in Aosta Valley, Italy

Testa Grigia is a mountain peak in the Pennine Alps standing at 3,315 meters (10,876 feet) within the Monte Rosa massif. The summit sits between Val d'Ayas and Valle del Lys, with gray rocky slopes that give it its name.

Testa Grigia was first climbed on 7 August 1858 by the alpinists Delapierre, Laurent and Rignon together with the Pinney couple. The ascent began from the Ayas side, the same valley from which the Pinter pass and the Ulrich Lateltin bivouac are still used today.

The mountain holds different names across the languages of this Alpine region. Locals call it Lo Gréno, while French-speaking visitors know it as Tête Grise and German climbers use the name Grauhaupt.

Hikers can reach the summit through several mountain routes that take several hours to complete. Starting early in the day and preparing for harsh high-altitude conditions is important for a safe visit.

A mountain shelter sits on the southeastern side of the peak, offering refuge for climbers tackling the route. A religious statue also stands at the very summit, giving the location a spiritual dimension.